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SIM Card Reader/Writer Kit 



I 



Make Projects 



build, hack, tweak, share, discover,' 



SIM Card Reader/Writer Kit 



Written By: Nick Brenn 



PARTS: 



Printed Circuit Board (1) 

SIM Card Holder (1) 

3.579545 MHz ("colorburst") crystal (1) 

DB-9 female connector w/solder cup (1) 

CMOS Hex inverter (1) 

7805 (TO-220 packaged or 78L05 (TO-92) 5V regulator (1) 

NPN transistor. EBC pinout (1) 

0.1 uF ceramic capacitor (1) 

18-22pF ceramic capacitor (2) 

100uF/6.3V capacitor (1) 

Green or Red 3mm LED (1) 

Power diode (1) 

5. 1 V Zener diode (2) 

1/4W 5% 1 Meg resistor (1) 

1/4W5%1.0Kresistor(3) 

1/4W 5% 10K resistor (4) 

9V battery clip (1) 

6 pin header (1) 



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SIM Card Reader/Writer Kit 



SUMMARY 

With this SIM Card Reader and Writer kit, you are free to experiment with your SIM cards 
and the information that is stored on them! You can back up stored SIM card data, recover 
deleted SMS's and phone contacts, and even examine the last 10 phone numbers dialed! 




Check to make sure you have all of the necessary parts to build the SIM card reader. You 
can find the list of parts under the extra guide data. 



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SIM Card Reader/Writer Kit 





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In the R8 location, insert the resistor with color code brown, black, and red. 

Bend the leads of the resistor to make it easier to solder it in when you turn the circuit 
board over. 

Solder the resistor in, and then clip the leads. 




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• In the location D1, insert the 1N4001 protection diode. Make sure that the end with the 
band is matched up with the band on the silkscreen image. 

• Just like the resistor, insert the diode and then bend the leads. This will make it easier to 
solder it in. 

• Turn the circuit board over, solder in the diode, and then clip the leads. 



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SIM Card Reader/Writer Kit 







• In location IC2, insert the 7805 5V regulator. 

• The regulator transforms the voltage from the battery's 9V to the proper 5V that can be 
used by the reader. 

• Make sure that the flat side of the regulator is matched up with the flat side of the 
silkscreen image. 

• Place the leads in, solder it, and then clip the leads. 




In the location LED1, insert the LED. The shorter lead of the LED is the negative lead, and 
the longer lead is the positive. 

Match the leads up with the (+) or the (-) on the silkscreened board. 

Solder it in, and then clip the leads. 



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SIM Card Reader/Writer Kit 





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Begin by threading the two battery holder wires through the hole in the corner and tie them 
in a knot. This helps to keep the wires from being pulled out. 

The red wire is soldered into the (+) hole, while the black wire is soldered into the (-) hole. 

Turn the PCB over and solder in the two power wires. 




Connect a 9V battery to the battery holder. 

Your green LED should light up, which means that the 5V power supply is working well. 

If it does not light up, check to make sure all of your solder joints are clean and secure. If 
they are, then test your battery with a multimeter and make sure that it is not lower than 
~6V. 

Once you have verified the power connection, disconnect the battery before completing the 
rest of the assembly. 



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SIM Card Reader/Writer Kit 





Jk * In locations R2 and R7, insert the 
resistors with color code brown, 
black, red into their spots. 

• Remember, resistors are not 
polarized, so it does not matter 
which direction you place them in. 

• Solder the leads in, and clip them 
too. 






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Insert the resistors with color code brown, black, orange into locations R3, R4, R5, and 
R6. 

Turn the circuit board over, solder the resistors in, and then clip the leads. 



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SIM Card Reader/Writer Kit 



Step 10 — Insert the lMeg Resistor and the zener diodes 







The resistor with color code brown, black, green should be placed in location R1. 

Solder this resistor in, and then clip the leads. 

The zener diodes should be inserted into D2 and D3. Make sure the black stripe on the 
diode matches with the stripe on the silkscreened circuit board. 



Step 11 — Insert the Crystal 




In location X1, insert the 3.57 MHz crystal. 

It does not matter which direction you insert the crystal. Solder it in, and clip the leads if 
necessary. 



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SIM Card Reader/Writer Kit 



Step 12 — Insert the 18pF Ceramic Capacitors 




In locations C2 and C3, insert the ceramic capacitors. 

The direction that you insert these into the circuit board does not matter. 



Step 13 — Insert the Electrolytic Capacitor 




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• In location C4, insert the electrolytic capacitor. These are polarized, so make sure the long 
lead goes into the hole marked with a (+). 

• You can bend it over, just to keep it from protruding out so much. 



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SIM Card Reader/Writer Kit 



Step 14 — Insert the 74HC04 Hex Inverter 





In location IC1, insert the 74HC04 hex inverter chip. 

You will need to bend the leads of the chip in slightly to make them fit into the circuit 
board. 

Now, safely, slide the chip in so that the notch in the chip matches the notch in the 
silkscreen. 

Push it in, and then solder the chip in. 



Step 15 — Insert the other Ceramic Capacitor 




In the location C1, insert the small 
yellow capacitor. 

It does not matter which direction 
you insert the capacitor. 



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SIM Card Reader/Writer Kit 



Step 16 — Insert the NPN Transistor 




In location Q1, insert the PN2222 or 2N3904 transistor. 

Make sure the flat side of the transistor matches up with the flat side of the silkscreened 
image. 

Solder it in, and then clip the leads. 



Step 17 — Inserting the SIM Card Holder 







• Begin by heating up one of the SIM holder's pins and melting a tiny bit of solder onto it. 

• Now hold the SIM card holder in place while reheating the pin with the solder. 

• Slide the holder so that the pins align with the pads. 

• Remove the soldering iron to secure this connection. Now just solder the rest of the pins 
for the holder. 



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SIM Card Reader/Writer Kit 



Step 18 — Attaching the DB-9 Connector 




• Sandwich the pins of the DB-9 Connector with the circuit board. Make sure you pay 
attention to which side has 5 pins and which has 4 pins. 

• Solder the leads securely to the board. 



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SIM Card Reader/Writer Kit 



Step 19 — Finishing up! 




• Now you are finished. If you plan 
on utilizing an FTDI cable to 
connect to the board, solder in the 
6-pin male header. 

• Begin by disconnecting the 9V 
battery. Slide the holder away from 
the green LED (refer to the OPEN 
lettering), and the holder will pop 
open. 

• Slide the SIM card in so that the 
contacts face up and the notched 
corner is on the bottom. Now 
connect the battery, and connect 
the DB-9 connector to the serial 
port. 

• Now you are connected to the 
computer! 



This document was last generated on 201 2-1 0-31 01 :44:1 2 AM. 



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Page 12 of 12